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Forum Discussion
Jroach
Jan 14, 2019Luminary
Is my internal performance OK
Looking to see if I am pushing my ORBI's to the limit or if I have another problem.
Problem: I have to run the Security Cameras at a lower res and lower fps that I would like.
Here is s snaps...
- Jan 14, 2019
Jroach wrote:
........... Same with the 2.4 vs 5, both drop frames.
...........
One last thing to test! Packet drops can also be caused by the fragmentation thresholds. Default CTS/RTS Threshold is 2347 for both 2.4 and 5 GHz bands. Please try to change those something lower, start with 2307 and then try different values between this figure and 2347.
Jroach
Jan 15, 2019Luminary
ekhalil, et al.
Is there a good tool that would help in PD? I was looking at Wifi Explorer (all mac house) to help.
ekhalil
Jan 15, 2019Master
Jroach wrote:
ekhalil, et al.
Is there a good tool that would help in PD? I was looking at Wifi Explorer (all mac house) to help.
If you're looking for a tool to analyse packet drops in your LAN then ping command is the best tool! Use it with different buffer sizes and ping your LAN gateway. You should see ping return times of 1ms on your LAN and never drop a packet if all is ok in your network.
If reducing the CTS/RTS helped then this -likely- means either that you have collisions and retransmissions in your network for some reason. This can be caused by high radio interference on your network from outside or internally (may be because the units are close to each other).
Of course choosing a good RTS/CTS value will help, the lower the threshold, the more stable your Wi-Fi network (you can also try values less than the suggested 2307), since it asks to send packages more frequently. But I'd focus on finding out the root cause of the interference to solve the issue once for all.
- JroachJan 15, 2019Luminary
ekhalil,
Thanks...Good idea re: the ping
Resulted in 3 to 5ms times
Per Furry's suggestion I'll move the satellite but, wouldn't the collissions show up in the ORBI report?
- ekhalilJan 15, 2019Master
Jroach wrote:
......Resulted in 3 to 5ms times
.....
3-5 ms when pinging in the LAN? That's way too much!
Jroach wrote:
.......I'll move the satellite ..
You have two options when you have collisions casued by radio interference: the preferred option is to get rid of the interference, but if not possible then reduce the CTS/RTS threshold to overcome the impact
Jroach wrote:
..... wouldn't the collissions show up in the ORBI report?
Unfortunately, it's not possible to see those collisions in Orbi
- ekhalilJan 15, 2019Master
Please note also that interference/collisions can also be caused by other devices in the network. Please test to switch off/disconnect all other devices and see if things will get better, and then add the devices one by one.
- JroachJan 15, 2019LuminaryEkhalil,
Have already started to unplug one by one. Hoping to find the one device causing the problem (afraid if I unplug them all and plug them in that the problem will go away). I’m suspect of the MacIntosh or Denon receivers and will start there. First though, I’m moving the satellite to see if that makes a difference. - JroachJan 15, 2019Luminary
When you said it should be under 1ms, was that wired or wireless?
The reason I ask....I disconnected my laptop (the device I had been using to ping) and ping'ed from another computer. Results were under 1ms (avg was .5ms) but this was from a wired computer. Switched to wireless on the same computer and the numbers went back up. I understand that wired should be less but I wanted to check to see if I mislead the group by stating my results and not letting you know I was wireless.
I moved the Satellite. Ping was still 2ms+
Removed the devices one-by-one, reconnecting them after I checked to see if the speed changed. No Change.
Thanks again
- JroachJan 15, 2019Luminary
Also, I had to move the satellite back. The connection was showing "POOR" in the new location. With th esatellite turned off, response was still excess of 2ms.
- ekhalilJan 15, 2019Master
Jroach wrote:
When you said it should be under 1ms, was that wired or wireless?
The reason I ask....I disconnected my laptop (the device I had been using to ping) and ping'ed from another computer. Results were under 1ms (avg was .5ms) but this was from a wired computer. Switched to wireless on the same computer and the numbers went back up. I understand that wired should be less but I wanted to check to see if I mislead the group by stating my results and not letting you know I was wireless.
I moved the Satellite. Ping was still 2ms+
Removed the devices one-by-one, reconnecting them after I checked to see if the speed changed. No Change.
Thanks again
Ok, good, then we conclude that you only have a radio interference/retransmissions/collisions on the wifi network and no such issues affecting your wired network.
So please focus on the radio environment --> Internal and external interference. I think that around 2 ms ping is good enough though.
Is the RTS/CTS still giving you improvements? What values have you tried so far?
- JroachJan 15, 2019Luminary
What are examples of: Internal and external interference? I understand the microwave interference when running but am I looking for a "ligh bulb" as an example?
Is <1ms still the target for wireless?
- ekhalilJan 15, 2019Master
Jroach wrote:
What are examples of: Internal and external interference? I understand the microwave interference when running but am I looking for a "ligh bulb" as an example?
......
Major internal interference is caused by Orbi units interfering with each other. The router and satellites are using the same radio channels so having them close to each other affect all units negetively for sure.
Major external interference is neighbors using the same channels that you are using for fronthaul as well as for backhaul.
Jroach wrote:
....Is <1ms still the target for wireless?
No, you need to have ideal conditions to reach this figure. < 1ms ping time is only for wired devices.
- JroachJan 15, 2019Luminary
I started to test the channels, one by one...
Out of desparation and hoping to speed things up:
- I turned off the house power (generator and house batteries off).
- Orbi, modem and switch are the onlything on a secondary UPS
(except some emergency lighting)
pinging ORBI in the same room it is still in excess of 2ms.
Sounds like my best speed is around 2-3ms.
Would you agree?
Thanks.
- FURRYe38Jan 15, 2019Guru - Experienced User
Using PingPlotter.com, you can get a better idea of latency and such via wired and wireless connections with your Orbi.
You can use it for freefor a trial period.
Jroach wrote:
I started to test the channels, one by one...
Out of desparation and hoping to speed things up:
- I turned off the house power (generator and house batteries off).
- Orbi, modem and switch are the onlything on a secondary UPS
(except some emergency lighting)
pinging ORBI in the same room it is still in excess of 2ms.
Sounds like my best speed is around 2-3ms.
Would you agree?
Thanks.
- JroachJan 15, 2019Luminary
Furrye38,
I was looking at PingPlotter and Wifi Explorer. PingPlotter looks internaly, Wifi Explorer looks inside and outside. Both have a free trial so I'll give them a try and report back.
I got a feeling I'm trying to fix something that can't be fixed (ie: normal) and that I'll need to slow the cameras down :(.
- JroachJan 15, 2019Luminary
attached are the top offenders. Not all of the cameras made the list but the ones that tend to be more active (motion or continuous feed). Without wiring the cameras, I think this is as good as it gets.
I'm goiung to dig into the cmaera settings a bit more to see if there are any tweaks that improve my situation.
- FURRYe38Jan 15, 2019Guru - Experienced User
Ok. Sounds good. The higher resolution and FPS you do on the cameras will take up more bandwidth. Especially if you have more than a few online at the sametime. You might try setting up one camera, set for lowest resolution and FPS, test, the and another camera with same settings. Graduate adding cameras to see what happens.
Jroach wrote:
Furrye38,
I was looking at PingPlotter and Wifi Explorer. PingPlotter looks internaly, Wifi Explorer looks inside and outside. Both have a free trial so I'll give them a try and report back.
I got a feeling I'm trying to fix something that can't be fixed (ie: normal) and that I'll need to slow the cameras down :(.
- JroachJan 15, 2019Luminary
Using PingPlotter I captured the attached. While there are some spikes/peaks, it is still green. Is it a safe assumption that green is OK?
- JammasterCJan 15, 2019Star
Are you using Windows or macOS?
For OS you can use the included Network Utility for easy to use "Ping".
just type "Network Utility" in the Spotlight Search.
- JroachJan 15, 2019LuminaryJammasterc,
Noted
Thanks.